[INFO] cloning repository https://github.com/gobanos/dailyprogrammer-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gobanos/dailyprogrammer-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgobanos%2Fdailyprogrammer-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgobanos%2Fdailyprogrammer-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 273110c12e3f84d8c2475661c5f669024764d30b
[INFO] checking gobanos/dailyprogrammer-rs against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgobanos%2Fdailyprogrammer-rs" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gobanos/dailyprogrammer-rs on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gobanos/dailyprogrammer-rs
[INFO] finished tweaking git repo https://github.com/gobanos/dailyprogrammer-rs
[INFO] tweaked toml for git repo https://github.com/gobanos/dailyprogrammer-rs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/gobanos/dailyprogrammer-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-3/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23592e319917416442068640d39ee16bf65c13a7626a42586bbcfa048e2fc774
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "23592e319917416442068640d39ee16bf65c13a7626a42586bbcfa048e2fc774", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23592e319917416442068640d39ee16bf65c13a7626a42586bbcfa048e2fc774", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23592e319917416442068640d39ee16bf65c13a7626a42586bbcfa048e2fc774", kill_on_drop: false }`
[INFO] [stdout] 23592e319917416442068640d39ee16bf65c13a7626a42586bbcfa048e2fc774
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 646d9a694c651a38428920b8a8d483ad127d30dd553329b15fce4feb4df05d0a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "646d9a694c651a38428920b8a8d483ad127d30dd553329b15fce4feb4df05d0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking dailyprogrammer-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Hidato`
[INFO] [stdout]   --> src/bin/h282.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | struct Hidato {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Candidates`
[INFO] [stdout]   --> src/bin/h282.rs:58:1
[INFO] [stdout]    |
[INFO] [stdout] 58 | type Candidates = Vec<usize>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Cell`
[INFO] [stdout]   --> src/bin/h282.rs:60:6
[INFO] [stdout]    |
[INFO] [stdout] 60 | enum Cell {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Hidato`
[INFO] [stdout]   --> src/bin/h282.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | struct Hidato {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Candidates`
[INFO] [stdout]   --> src/bin/h282.rs:58:1
[INFO] [stdout]    |
[INFO] [stdout] 58 | type Candidates = Vec<usize>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Cell`
[INFO] [stdout]   --> src/bin/h282.rs:60:6
[INFO] [stdout]    |
[INFO] [stdout] 60 | enum Cell {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Base`
[INFO] [stdout]    --> src/bin/e282.rs:145:6
[INFO] [stdout]     |
[INFO] [stdout] 145 | enum Base {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_input`
[INFO] [stdout]    --> src/bin/e282.rs:176:4
[INFO] [stdout]     |
[INFO] [stdout] 176 | fn parse_input() -> Option<(Base, String)> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `to_base_10`
[INFO] [stdout]   --> src/bin/e282.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn to_base_10(num: &str) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `to_base_f`
[INFO] [stdout]    --> src/bin/e282.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn to_base_f(num: usize) -> String {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Base`
[INFO] [stdout]    --> src/bin/e282.rs:145:6
[INFO] [stdout]     |
[INFO] [stdout] 145 | enum Base {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/bin/e282.rs:156:8
[INFO] [stdout]     |
[INFO] [stdout] 156 |     fn new() -> Fibonacci {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_input`
[INFO] [stdout]    --> src/bin/e282.rs:176:4
[INFO] [stdout]     |
[INFO] [stdout] 176 | fn parse_input() -> Option<(Base, String)> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `at` found for struct `regex::Captures<'_>` in the current scope
[INFO] [stdout]   --> src/bin/e283.rs:96:22
[INFO] [stdout]    |
[INFO] [stdout] 96 |                 caps.at(1).unwrap().to_string(),
[INFO] [stdout]    |                      ^^ method not found in `regex::Captures<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `at` found for struct `regex::Captures<'_>` in the current scope
[INFO] [stdout]   --> src/bin/e283.rs:96:22
[INFO] [stdout]    |
[INFO] [stdout] 96 |                 caps.at(1).unwrap().to_string(),
[INFO] [stdout]    |                      ^^ method not found in `regex::Captures<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `at` found for struct `regex::Captures<'_>` in the current scope
[INFO] [stdout]   --> src/bin/e283.rs:97:22
[INFO] [stdout]    |
[INFO] [stdout] 97 |                 caps.at(2).unwrap().to_string(),
[INFO] [stdout]    |                      ^^ method not found in `regex::Captures<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `at` found for struct `regex::Captures<'_>` in the current scope
[INFO] [stdout]   --> src/bin/e283.rs:97:22
[INFO] [stdout]    |
[INFO] [stdout] 97 |                 caps.at(2).unwrap().to_string(),
[INFO] [stdout]    |                      ^^ method not found in `regex::Captures<'_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dailyprogrammer-rs`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "646d9a694c651a38428920b8a8d483ad127d30dd553329b15fce4feb4df05d0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "646d9a694c651a38428920b8a8d483ad127d30dd553329b15fce4feb4df05d0a", kill_on_drop: false }`
[INFO] [stdout] 646d9a694c651a38428920b8a8d483ad127d30dd553329b15fce4feb4df05d0a